Bosch Varifocal 960H Lenses

This family of 960H lenses comprises varifocal lenses with DC-iris control. They
are compact, rugged lenses in 1/3‑inch image formats. The lenses range from
wideangle to telephoto to cover virtually all applications in CCTV observation
systems.

The lenses deliver impressive optical quality due to their 960H resolution,
contrast reproduction, and coating.

LVF-4000C Series System overview

Higher resolution sensors, with even smaller pixel sizes, require higher
resolution lenses to deliver their full potential. The lenses in this family are
specifically designed for the Bosch range of 960H DINION cameras. To get the
maximum resolution from a 960H camera, you need to select a lens which can match
sensor resolution not only at the centre, but also at the edges and at different
iris openings.

The Modulation Transfer Function (MTF) specification is an indication of the
resolution, contrast, and sharpness performance of a lens. Lens resolution is
normally measured in line pairs per millimeter (lp/ mm). The MTF of each lens
gives the maximum resolution in terms of lp/mm for a given scene.

Both the LVF-4000C and LVF-5000C range have excellent daytime resolution. The
LVF-5000C range is best suited to wide dynamic range (WDR) cameras and cameras
that are used to capture more details at night.

The measured MTF specifications are only one aspect of a lens’s quality. Special
anti-reflective coatings to reduce flare, better aberration performance and
lower distortion also contribute to their suitability for different cameras.

LVF-4000C Series Functions

DC iris control

For auto iris control, all lenses use the standard fourpin EIAJ connector, which
fits directly into the camera's iris output.

Wide range

The extent of the range means that an installer is always able to select the
most appropriate lens for both camera and application.

For optimizing angular fields right on site, varifocal lenses are the most
versatile and practical solution available. These lenses allow for setting
virtually any angle of field, which maximizes surveillance effects. Installers
do not need to carry several different focal length lenses – and installation is
more efficient because they can find the right angles of field without moving
the camera set-up. If the field-of-view requirements change after installation,
modification is simple by just altering the lens’ focal length settings.

IR corrected

All lenses in this range are IR corrected to match the wide range of light
conditions covered by our cameras. Infrared corrected lenses provide fully
adjusted and sharp focused images in daylight and at night when used in
conjunction with IR illuminators. This makes IR lenses the best choice for high
performance day/night cameras.

Robust

The mechanical construction is designed to withstand both frequent iris control
operations and the environmental stress of security installations. For flexible,
high-quality, reliable lenses that match a 960H camera’s performance, this
family is the ideal solution.